body {
    background-color: #fff;
    margin: 0;
    padding: 0;
    display: flex;
}

.left {
    width: 30%;
    border-right: 1px solid #999;
    height: 100vh;
}

.right {
    flex: 1;
    height: 100vh;
}

.title {
    height: 60px;
    font-size: 24px;
    font-weight: 400;
    line-height: 2.5;
    text-align: center;
    color: #999;
    border-bottom: 1px solid #999;
}

.left2 {
    width: 40%;
    border-right: 1px solid #999;
    height: calc(100vh - 60px);
}

.right2 {
    flex: 1;
}